Typical Parameters Description ST Board LZ Board HZ Board Classification Temperature ( ℃) 1260 1350 1430 Density ( kg/m3) 280/300/320 280/300/320 280/300/320 Max Operating Temperature ( ℃) 1100 1200 1350 Water Content ( %) ≤1 ≤1 ≤1 Linear Shrinkage after Heating (%) 1000 c *24h